Re: Multi-column distinctness.

From: Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
To: tomas(dot)vondra(at)2ndquadrant(dot)com
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Multi-column distinctness.
Date: 2015-09-07 03:13:13
Message-ID: 20150907.121313.47944643.horiguchi.kyotaro@lab.ntt.co.jp
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Hello,

> FWIW Horiguchi-san is one of the few people who actually took time to
> review

I personally think such kind of things should not to be counted
in judging this issue:)

> the multivariate stats patch, and I don't quite see this patch
> as conflicting with the multivariate one.
>
> It implements a small subset of the (much larger) multivariate stats
> patch, and reusing it within my patch should not be a big
> deal. Actually, this type of statistics was proposed by Horiguchi-san
> himself, and the multivariate patch does not implement it yet
> (although I intend to address that soon).

Year. I think we can deal Tomas's patch as natural enhancement of
this patch and it is not so bad as a vangard(?).

> So no conflict here. Of course, we need to be a bit careful to make it
> compatible (especially the syntax part).

I agree with it. They don't make bad conflict but we might stuc
by wrong decision in API, like syntax will.

regards,

--
Kyotaro Horiguchi
NTT Open Source Software Center

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